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-rw-r--r--include/asm-arm26/ptrace.h104
1 files changed, 104 insertions, 0 deletions
diff --git a/include/asm-arm26/ptrace.h b/include/asm-arm26/ptrace.h
new file mode 100644
index 000000000000..6a46b5ae1156
--- /dev/null
+++ b/include/asm-arm26/ptrace.h
@@ -0,0 +1,104 @@
1#ifndef __ASM_ARM_PTRACE_H
2#define __ASM_ARM_PTRACE_H
3
4#define PTRACE_GETREGS 12
5#define PTRACE_SETREGS 13
6#define PTRACE_GETFPREGS 14
7#define PTRACE_SETFPREGS 15
8#define PTRACE_OLDSETOPTIONS 21
9
10/* options set using PTRACE_SETOPTIONS */
11#define PTRACE_O_TRACESYSGOOD 0x00000001
12
13#define MODE_USR26 0x00000000
14#define MODE_FIQ26 0x00000001
15#define MODE_IRQ26 0x00000002
16#define MODE_SVC26 0x00000003
17#define MODE_MASK 0x00000003
18
19#define PSR_F_BIT 0x04000000
20#define PSR_I_BIT 0x08000000
21#define PSR_V_BIT 0x10000000
22#define PSR_C_BIT 0x20000000
23#define PSR_Z_BIT 0x40000000
24#define PSR_N_BIT 0x80000000
25
26#define PCMASK 0xfc000003
27
28
29#ifndef __ASSEMBLY__
30
31#define pc_pointer(v) ((v) & ~PCMASK) /* convert v to pc type address */
32#define instruction_pointer(regs) (pc_pointer((regs)->ARM_pc)) /* get pc */
33#define profile_pc(regs) instruction_pointer(regs)
34
35/* this struct defines the way the registers are stored on the
36 stack during a system call. */
37
38struct pt_regs {
39 long uregs[17];
40};
41
42#define ARM_pc uregs[15]
43#define ARM_lr uregs[14]
44#define ARM_sp uregs[13]
45#define ARM_ip uregs[12]
46#define ARM_fp uregs[11]
47#define ARM_r10 uregs[10]
48#define ARM_r9 uregs[9]
49#define ARM_r8 uregs[8]
50#define ARM_r7 uregs[7]
51#define ARM_r6 uregs[6]
52#define ARM_r5 uregs[5]
53#define ARM_r4 uregs[4]
54#define ARM_r3 uregs[3]
55#define ARM_r2 uregs[2]
56#define ARM_r1 uregs[1]
57#define ARM_r0 uregs[0]
58#define ARM_ORIG_r0 uregs[16]
59
60#ifdef __KERNEL__
61
62#define processor_mode(regs) \
63 ((regs)->ARM_pc & MODE_MASK)
64
65#define user_mode(regs) \
66 (processor_mode(regs) == MODE_USR26)
67
68#define interrupts_enabled(regs) \
69 (!((regs)->ARM_pc & PSR_I_BIT))
70
71#define fast_interrupts_enabled(regs) \
72 (!((regs)->ARM_pc & PSR_F_BIT))
73
74#define condition_codes(regs) \
75 ((regs)->ARM_pc & (PSR_V_BIT|PSR_C_BIT|PSR_Z_BIT|PSR_N_BIT))
76
77/* Are the current registers suitable for user mode?
78 * (used to maintain security in signal handlers)
79 */
80static inline int valid_user_regs(struct pt_regs *regs)
81{
82 if (user_mode(regs) &&
83 (regs->ARM_pc & (PSR_F_BIT | PSR_I_BIT)) == 0)
84 return 1;
85
86 /*
87 * force it to be something sensible
88 */
89 regs->ARM_pc &= ~(MODE_MASK | PSR_F_BIT | PSR_I_BIT);
90
91 return 0;
92}
93
94extern void show_regs(struct pt_regs *);
95
96#define predicate(x) (x & 0xf0000000)
97#define PREDICATE_ALWAYS 0xe0000000
98
99#endif /* __KERNEL__ */
100
101#endif /* __ASSEMBLY__ */
102
103#endif
104